body {
    font:16px/28px Microsoft YaHei;
}

h1 {
    text-align: center;
    font-weight: 400;
    

}

div {
    text-align: center;
  
    color: gray;
}

a {
    text-decoration: none;
}

input {
    color: gray;
}

button {
    font-weight: 700;
}

p {
    text-indent: 2em;
}

img {
    width: 400px;
    height: 400px;

}

